What should I DO?????

Okay i USED to liek this boy named Isaias, he is in my Tex.History cl and so Is Christian, the boy i like NOW. Well me and chris ALWAYS sit together and always are sort of flirty and stuff. Well when ever isaias walks past us (he allways out of his seat) he give chris a dirty look but chris dotn see it cuz he lookin @ me. Well i still sort of like Isaias but i like Chris too. But....chris like me and isaias...well i dotn know wut he thinks, but he never gave chris ugly looks until me and chris started acting like all flirty and touchy and stuff. I dont know wut to do, should i like chris or isaias? should i tell chris or isaias that i like him? Should i stop being flirty w/chris so i dont get isaias mad? Wut should i do????? I come to the older people (Y'all) looking for advise! HELP ME! But please dont tell me i am too young to be worrying about this or any of that bull s*it. I am 14, and confused! HELP PLEASE!